Dumarjor is a village in Nirsa Cum Chirkunda tehsil in district of Dhanbad, Jharkhand, India. As per the data provided by Census of India in 2011, total population of Dumarjor was 313 which includes 158 males and 155 females. Dumarjor covers 149 ha area. Pincode of Dumarjor is N/A.